Answer:
12a + 3b.
Step-by-step explanation:
3(4a + b)
= 3 * 4a + 3 * b
= 12a + 3b.
Hope this helps!
x =2
y = - 2 x + 4
0 = - 2 x + 4
x = 2
x=3.2
12.5+3.5=16
16÷5= 3.2
